A very subtle language thing, but I think important.
The Thrust is NOT LOCKED. AB says so, but it is not "LOCKED".
It is "retained". If anyone thinks words don't matter, consider, "MOVE THROTTLE". "CYCLE LEVERS". Left in last position, "VALUE".
It is politics and Philosophy, not an accurate description of Throttle avail.
The AB is NOT pilot friendly in many ways, even in subtle ways that start an argument. It has an "ATTITUDE".
"LOCKED", in an emergency, with impaired conditions, means "DON'T TOUCH". If you think ergo and linguistics are not life and death, think again.